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This article was downloaded by: [University of South Florida] On: 16 May 2014, At: 10:56 Publisher: Routledge Informa Ltd Registered in England and Wales Registered Number: 1072954 Registered office: Mortimer House, 37-41 Mortimer Street, London W1T 3JH, UK Children's Health Care Publication details, including instructions for authors and subscription information: http://www.tandfonline.com/loi/hchc20 Correlates and Mediators of Life Satisfaction among Youth with Attention-Deficit/Hyperactivity Disorder Joshua M. Nadeau Ph.D a , Marni L. Jacob Ph.D a , Amanda C. Keene B.A. a , Shawn M. Alderman B. A. a , Leah E. Hacker B.A. a , Mark A. Cavitt M.D. b , Jeffrey L. Alvaro M.D. b & Eric A. Storch Ph.D. a a Department of Pediatrics , University of South Florida b Pediatric Psychiatry Services , All Children's Hospital/John Hopkins Medicine Accepted author version posted online: 16 May 2014.Published online: 16 May 2014. To cite this article: Joshua M. Nadeau Ph.D , Marni L. Jacob Ph.D , Amanda C. Keene B.A. , Shawn M. Alderman B. A. , Leah E. Hacker B.A. , Mark A. Cavitt M.D. , Jeffrey L. Alvaro M.D. & Eric A. Storch Ph.D. (2014): Correlates and Mediators of Life Satisfaction among Youth with Attention-Deficit/Hyperactivity Disorder, Children's Health Care To link to this article: http://dx.doi.org/10.1080/02739615.2014.896215 Disclaimer: This is a version of an unedited manuscript that has been accepted for publication. As a service to authors and researchers we are providing this version of the accepted manuscript (AM). Copyediting, typesetting, and review of the resulting proof will be undertaken on this manuscript before final publication of the Version of Record (VoR). During production and pre-press, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal relate to this version also. PLEASE SCROLL DOWN FOR ARTICLE Taylor & Francis makes every effort to ensure the accuracy of all the information (the “Content”) contained in the publications on our platform. However, Taylor & Francis, our agents, and our licensors make no representations or warranties whatsoever as to the accuracy, completeness, or suitability for any purpose of the Content. Any opinions and views expressed in this publication are the opinions and views of the authors, and are not the views of or endorsed by Taylor & Francis. The accuracy of the Content should not be relied upon and should be independently verified with primary sources of information. Taylor and Francis shall not be liable for any losses, actions, claims, proceedings, demands, costs, expenses, damages, and other liabilities whatsoever or howsoever caused arising directly or indirectly in connection with, in relation to or arising out of the use of the Content. This article may be used for research, teaching, and private study purposes. Any substantial or systematic reproduction, redistribution, reselling, loan, sub-licensing, systematic supply, or distribution in any form to anyone is expressly forbidden. Terms & Conditions of access and use can be found at http:// www.tandfonline.com/page/terms-and-conditions

Correlates and Mediators of Life Satisfaction among Youth with Attention-Deficit/Hyperactivity Disorder

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This article was downloaded by: [University of South Florida]On: 16 May 2014, At: 10:56Publisher: RoutledgeInforma Ltd Registered in England and Wales Registered Number: 1072954 Registered office: Mortimer House,37-41 Mortimer Street, London W1T 3JH, UK

Children's Health CarePublication details, including instructions for authors and subscription information:http://www.tandfonline.com/loi/hchc20

Correlates and Mediators of Life Satisfaction amongYouth with Attention-Deficit/Hyperactivity DisorderJoshua M. Nadeau Ph.D a , Marni L. Jacob Ph.D a , Amanda C. Keene B.A. a , Shawn M.Alderman B. A. a , Leah E. Hacker B.A. a , Mark A. Cavitt M.D. b , Jeffrey L. Alvaro M.D. b &Eric A. Storch Ph.D. aa Department of Pediatrics , University of South Floridab Pediatric Psychiatry Services , All Children's Hospital/John Hopkins MedicineAccepted author version posted online: 16 May 2014.Published online: 16 May 2014.

To cite this article: Joshua M. Nadeau Ph.D , Marni L. Jacob Ph.D , Amanda C. Keene B.A. , Shawn M. Alderman B. A. , LeahE. Hacker B.A. , Mark A. Cavitt M.D. , Jeffrey L. Alvaro M.D. & Eric A. Storch Ph.D. (2014): Correlates and Mediators of LifeSatisfaction among Youth with Attention-Deficit/Hyperactivity Disorder, Children's Health Care

To link to this article: http://dx.doi.org/10.1080/02739615.2014.896215

Disclaimer: This is a version of an unedited manuscript that has been accepted for publication. As a serviceto authors and researchers we are providing this version of the accepted manuscript (AM). Copyediting,typesetting, and review of the resulting proof will be undertaken on this manuscript before final publication ofthe Version of Record (VoR). During production and pre-press, errors may be discovered which could affect thecontent, and all legal disclaimers that apply to the journal relate to this version also.

PLEASE SCROLL DOWN FOR ARTICLE

Taylor & Francis makes every effort to ensure the accuracy of all the information (the “Content”) containedin the publications on our platform. However, Taylor & Francis, our agents, and our licensors make norepresentations or warranties whatsoever as to the accuracy, completeness, or suitability for any purpose of theContent. Any opinions and views expressed in this publication are the opinions and views of the authors, andare not the views of or endorsed by Taylor & Francis. The accuracy of the Content should not be relied upon andshould be independently verified with primary sources of information. Taylor and Francis shall not be liable forany losses, actions, claims, proceedings, demands, costs, expenses, damages, and other liabilities whatsoeveror howsoever caused arising directly or indirectly in connection with, in relation to or arising out of the use ofthe Content.

This article may be used for research, teaching, and private study purposes. Any substantial or systematicreproduction, redistribution, reselling, loan, sub-licensing, systematic supply, or distribution in anyform to anyone is expressly forbidden. Terms & Conditions of access and use can be found at http://www.tandfonline.com/page/terms-and-conditions

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Running head: LIFE SATISFACTION AMONG YOUTH WITH ADHD

Correlates and Mediators of Life Satisfaction among Youth with Attention-Deficit/Hyperactivity Disorder Joshua M. Nadeau, Ph.D.1, Marni L. Jacob, Ph.D.1, Amanda C. Keene, B.A.1, Shawn M. Alderman, B. A.1, Leah E. Hacker, B.A.1, Mark A. Cavitt, M.D.2, Jeffrey L. Alvaro, M.D.2,

and Eric A. Storch, Ph.D.1

1Department of Pediatrics, University of South Florida

2Pediatric Psychiatry Services, All Children’s Hospital/John Hopkins Medicine

Author Note

Correspondence concerning this article should be addressed to Dr. Joshua Nadeau, Department of Pediatrics, Rothman Center for Neuropsychiatry, University of South Florida, Box 7523, 880 6th Street South, St. Petersburg, FL 33701; email: [email protected].

Abstract

The current study examined factors associated with life satisfaction among 111 youth, ages 8-17

years, presenting for outpatient treatment of attention-deficit/hyperactivity disorder (ADHD).

Youth completed the Students’ Life Satisfaction Scale, Vanderbilt ADHD Diagnostic Rating

Scale – Child, and the Generalized Anxiety Disorder (GAD) and Major Depressive Disorder

(MDD) modules of the Revised Child’s Anxiety and Depression Scale. A primary caregiver

completed a standard demographic form, and the Vanderbilt ADHD Diagnostic Rating Scale –

Parent. Results indicated that child-rated ADHD symptoms, depressive symptoms, and

generalized anxiety symptoms were negatively related to life satisfaction. Parent-rated ADHD

symptoms in the child were related to child-rated ADHD symptoms, but not to depressive

symptoms, generalized anxiety symptoms, or life satisfaction. Depressive symptoms predicted

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life satisfaction above and beyond parent-rated ADHD symptom severity; however, neither

depressive nor generalized anxiety symptoms were found to uniquely predict life satisfaction

above and beyond child-rated ADHD symptom severity. Depressive symptoms mediated the

relationship between child-rated ADHD symptom severity and life satisfaction. Assessment and

treatment implications are discussed; specifically, we highlight how the variables of interest may

impact clinical presentation and treatment course.

Research on subjective well being has provided insight into individual resilience and positive

outcomes, offering a different perspective from the traditional focus on symptoms and

impairment and encouraging investigation of comprehensive treatment strategies (Frisch, 1999;

Gilman & Huebner, 2003). It is generally understood that subjective well being is a binary

construct, consisting of an emotional (e.g., positive and negative affect) and a cognitive

component (e.g., life satisfaction; Diener, 1984). Life satisfaction is defined as “a global

assessment of a person’s quality of life according to his/her chosen criteria” (Dew & Huebner,

1994). Life satisfaction is considered more stable than positive and negative affect across time

(Diener, Suh, Lucas, & Smith, 1999), being relatively unaffected by changes in life experiences

(Fujita & Diener, 2005; Huebner, Funk, & Gilman, 2000). Among youth, life satisfaction has

demonstrated weak correlations with demographics (Gilman & Huebner, 2003), suggesting that

life satisfaction ratings are not significantly associated with race, gender, or school grade

(Huebner et al., 2000).

Despite weak associations between demographic variables and life satisfaction, emerging data

suggest that life satisfaction is strongly associated with personal characteristics and perceptions.

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For example, adolescents endorsing high life satisfaction also report higher GPA, self-esteem,

levels of hope, and quality of relationships with their parents, as well as being less likely to

experience anxiety or depression (Gilman & Huebner, 2006) as compared to peers endorsing

lower levels of life satisfaction. Conversely, research has identified direct associations between

low life satisfaction and internalizing and externalizing behaviors (Lewinsohn, Redner, &

Seeley, 1991; McKnight, Huebner, & Suldo, 2002). For example, Lewinsohn et al. (1991)

demonstrated that low life satisfaction was associated with depressive symptoms.

Among clinical populations, a number of positive indicators have been linked to high life

satisfaction, with data suggesting that life satisfaction may mitigate functional impairment

among youth with chronic conditions (e.g., Huebner, Funk, & Gilman, 2000; Nadeau et al.,

2013). Similarly, low life satisfaction among youth with psychopathology has been associated

with increased internalizing symptoms and externalizing behaviors, as youth with low life

satisfaction were more likely to endorse engagement in risk-taking behavior (e.g., drug and

alcohol use; Zullig, Valois, Huebner, Oeltmann, & Drane, 2001). Despite the associations

between maladaptive behavior and low life satisfaction, it is unclear to what extent specific

symptoms of psychopathology are associated with life satisfaction levels. In particular, given the

presence of significant impairment that is often associated with attention-deficit/hyperactivity

disorder (ADHD) in youth (DuPaul et al., 2004; Hoza et al., 2005; Mikami & Hinshaw, 2006),

children diagnosed with ADHD may be at an elevated risk for experiencing low life satisfaction,

potentially leading to greater negative outcomes and symptomology (Gilman & Huebner, 2003;

Gudjonsson et al., 2009, Mick, Faraone, Spencer, Zhang, & Biederman, 2008).

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An externalizing disorder characterized by inattention and/or hyperactivity and impulsivity

(American Psychiatric Association [APA], 2013), ADHD affects 5-8% of school-aged children

(Froehlich, Lanphear, Epstein, Barbaresi, Katusic, & Kahn, 2007; Polanczyk, de Lima, Horta,

Biederman, & Rohde, 2007). A diagnosis of ADHD is often comorbid with both externalizing

and internalizing behaviors (Biederman, 2005), as approximately 25% of children with ADHD

are also diagnosed with a comorbid anxiety disorder – commonly Generalized Anxiety Disorder

(GAD; Angold, Costello, & Erkanli, 1999; Jarrett & Ollendick, 2008). As such, in addition to the

significant impairment in social (Mikami & Hinshaw, 2006) and academic (DuPaul et al., 2004)

domains of functioning associated with ADHD, symptoms of comorbid generalized anxiety

and/or depression may compound the degree of impairment experienced (Biederman et al., 1996;

Safren et al., 2001). Further, symptoms associated with GAD may overlap with or mimic

symptoms consistent with ADHD; specifically, worry or intrusive thoughts may appear as

inattention, while restlessness or nervousness may be difficult to distinguish from hyperactivity

or impulsivity (Jarrett & Ollendick, 2008). Within the social domain, children with ADHD

experience frequent peer rejection and fewer dyadic friendships (Hoza et al., 2005). In the

academic domain, children with ADHD are often placed in special education classes and are

likely to have comorbid learning disorders, lower performance on standardized testing, failing

grades, grade retention, and lower graduation rates (DeShazo-Barry, Lyman & Klinger, 2002;

DuPaul, 2004). Familial relationships are also affected by the presence of ADHD, with studies

demonstrating greater levels of parent-child conflict (Whalen et al., 2006), higher levels of

divorce (Wymbs et al., 2008), and lower levels of family functioning (Counts et al., 2005;

Deault, 2010) in families among youth with ADHD.

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Given the significant level of impairment associated with the presence of ADHD, it is reasonable

to hypothesize that ADHD symptom severity would be negatively associated with life

satisfaction; however, the available research on life satisfaction among children with ADHD is

sparse. Currently, only one study has examined the relationship between life satisfaction and

ADHD symptoms in a sample of university students (Gudjonsson et al., 2009). Although the

researchers found that life satisfaction was negatively associated with inattentive symptoms of

ADHD, life satisfaction levels were more strongly associated (directly) with social functioning

and symptoms of anxiety and depression than with ADHD symptoms (Gudjonsson et al., 2009).

However, as this study sampled a community population of college-age students, it is unclear to

what extent these relationships are representative of those found within a clinical pediatric

population. Nevertheless, these findings align with the general associations between life

satisfaction and internalizing symptoms that have been observed among non-clinical populations

(Mahmoud, Staten, Hall, & Lennie, 2012; Ollendick, Raishevich, Davis, Sirbu, & Ost, 2010;

Proctor, Linley, & Maltby, 2009).

Understanding the relationship between ADHD symptoms and life satisfaction among children

may inform more effective intervention, leading to the increased likelihood of long-term positive

outcomes as children mature. Accordingly, this study sought to identify relationships among

child-reported life satisfaction, child- and parent-rated symptoms of ADHD, and child-reported

generalized anxiety and depressive symptoms. More specifically, this study examined three

research questions. First, what are the relationships among life satisfaction, ADHD symptoms,

and depressive and generalized anxiety symptoms in youth? Second, do depressive and

generalized anxiety symptoms predict life satisfaction over and above ADHD symptom severity?

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Finally, does life satisfaction mediate the relationship between child-rated ADHD symptom

severity and depressive symptoms? Based on previous research, it was expected that ADHD

symptoms and depressive symptoms would show significant inverse associations with self-

reported life satisfaction levels.

Method

Participants

Participants included 111 children and adolescents (39 female) and their parent(s) who presented

at a hospital-based outpatient pediatric psychiatric clinic specializing in the treatment of ADHD.

The youth ranged in age from 8 to 17 years (M=11.59 + 2.55 years). The vast majority of

participants were Caucasian (90.1%), with the remaining youth identified by parents as African-

American (4.5%), Hispanic (3.6%), Asian (0.9%), or other (0.9%). Approximately 27% of

families had an income of $40,000 or less, 37% of families had an income between $41,000 and

$82,000, and 36% of families had an income above $82,000.

All participants had a primary or co-primary diagnosis of ADHD according to the Diagnostic and

Statistical Manual (Fourth Edition, Text Revision; American Psychiatric Association [APA],

2000). Diagnoses were determined via best estimate procedures (Leckman, Sholomaskas,

Thompson, Belanger, & Weissman, 1982) in which consensus between two board certified child

and adolescent psychiatrists (one the treating clinician) regarding the primary diagnosis and the

presence of comorbid diagnoses was required for inclusion. In this procedure, the two

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psychiatrists discussed clinical information provided by the child and his/her family, together

with reviewing the participants’ completed measures and past clinical records to provide an

accurate diagnostic profile. Participants were excluded in the absence of 100% agreement for the

primary or comorbid diagnoses, or if they received co-occurring diagnoses of psychosis, autism

spectrum disorder, or mental retardation. Of note, no youth were excluded based upon diagnostic

disagreement.

Measures

Demographic Form. Parents/caregivers provided information about their child’s age, gender,

grade level, medication, how long the child has been on their current medication regimen, and

other current treatments (e.g., therapy, etc.).

Students’ Life Satisfaction Scale. The SLSS (Huebner, 1991) consists of seven 4-point Likert-

type items assessing youth perceptions of satisfaction with life, with higher scores indicating

higher levels of life satisfaction. The SLSS exhibits strong psychometric properties (Marques,

Pais-Ribeiro, & Lopez, 2011). Internal consistency for the SLSS in this sample was strong (α =

.86).

Vanderbilt ADHD Diagnostic Rating Scale - Parent/Child (VADRS - P/C; Wolraich et al.,

2003). The VADRS is a 47-item rating scale utilized to assess the presence of ADHD,

oppositional-defiant disorder (ODD), and conduct disorder (CD) symptoms in clinical youth

populations. Given the nature of the current study, only items relevant to ADHD symptoms in

youth (e.g., inattention, hyperactivity/impulsivity) were utilized. The VADRS has shown

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excellent reliability (α = .90) and adequate concurrent validity (r = .79) for inattention and

hyperactivity/impulsivity subscales (Wolraich et al., 2003). Internal consistency ratings for the

VADRS-P/C in this sample were strong for child (α = .88 overall, .79 for inattention and .86 for

hyperactivity/impulsivity) and parent (α = .91 overall, .87 for inattention and .92 for

hyperactivity/impulsivity) versions.

Revised Child’s Anxiety and Depression Scale (RCADS; Chorpita et al., 2000). The RCADS

is a 47-item youth self-report inventory that assesses anxiety and depressive symptoms within six

separate subscales. For this study, only the major depressive disorder (MDD; 10 items) and

generalized anxiety disorder (GAD; 6 items) subscales were completed. The RCADS has

demonstrated excellent psychometric properties (Chorpita, Moffit, & Gray, 2005). Internal

consistency ratings for the RCADS in this sample were strong (α = .82 overall, .84 for GAD and

.70 for MDD).

Procedures

Study procedures were approved by the local Institutional Review Board. During their regularly

scheduled appointments, patients were screened by their clinician and provided with a general

description of the study. Patients meeting inclusion criteria and expressing interest in

participating were provided the full details of study participation by study staff, who then

obtained written consent from the parent and written assent from the youth. Participating parents

and youth were separated into private rooms to complete study measures. A member of the

research staff remained available to answer any questions and/or assist the child in completing

the assessment packet.

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Data Analysis

Descriptive statistics were generated for all measures, with zero-order correlations used to assess

univariate relationships. Two hierarchical regression analysis models were used to determine the

independent predictors of life satisfaction, with the first model utilizing parent-rated ADHD

symptom severity and the second model incorporating child-rated ADHD symptom severity. In

both models, ADHD symptom severity was included in the first step, and depressive and

generalized anxiety symptoms incorporated within the second step. To evaluate the possibility of

the association between child-rated ADHD symptom severity and depressive symptoms being

mediated by life satisfaction, bootstrapping methods of indirect effect (Preacher & Hayes, 2004)

were performed using the PROCESS macro in SPSS 21 (SPSS Inc., Chicago, IL) with 5,000

resamples and bias-corrected 95% confidence intervals (an indirect effect was considered

significant if the confidence interval did not include zero). This model set child-rated ADHD

symptom severity as the predictor, life satisfaction ratings as the mediator, and RCADS MDD

subscale score as the outcome.

Results

Sample characteristics

Of the 111 participating youth, 33 (29.7%) met criteria for at least one comorbid disorder, with

13 (11.7%) having an anxiety disorder, 12 (10.8%) a disruptive behavior disorder, 10 (9%) a

depressive disorder, 5 (4.5%) an unspecified mood disorder, and 5 (4.5%) a tic disorder. In

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addition, of the 111 participants, 108 (97.3%) were taking at least one prescribed medication,

with 26 (23.4%) taking three or more medications. Eighty-six (77.5%) were taking stimulant

medication, 30 (27%) a serotonin reuptake inhibitor (SRI), 23 (20.7%) an antihypertensive, 14

(12.6%) an atypical antipsychotic, and 13 (11.7%) a non-SRI antidepressant.

Associations between clinical characteristics

Zero-order univariate correlations between child-rated life satisfaction, child-rated depressive

and generalized anxiety symptoms, and measures of parent- and child-rated ADHD symptoms

are presented in Table 1. As can be seen, child-rated ADHD symptoms, symptoms of generalized

anxiety, and depressive symptoms displayed moderate negative correlations with life

satisfaction, while parent-rated ADHD symptoms were associated with child-rated ADHD

symptoms but not with depressive symptoms, symptoms of generalized anxiety, or child-rated

life satisfaction. Further, generalized anxiety and depressive symptoms were strongly correlated,

and both showed a strong positive relationship with child-rated ADHD symptoms.

Regression analysis for overall depressive and anxiety symptoms

Findings of the parent- and child-rated hierarchical regression models with life satisfaction as the

dependent variable are summarized in Table 2. Severity of parent-rated ADHD symptoms was a

significant predictor of life satisfaction, explaining 4% of the variance observed. Addition of

depressive and anxiety symptoms improved the overall model, explaining an additional 14% of

the variance in life satisfaction. Individual coefficients suggest that depressive symptoms

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predicted additional variance in life satisfaction beyond parent-rated ADHD symptom severity,

while generalized anxiety symptoms did not.

In the child-rated model, ADHD symptom severity was a significant predictor of life satisfaction,

explaining 11% of the variance observed. Addition of depressive and anxiety symptoms

improved the overall model, explaining an additional 5% of the variance in life satisfaction.

However, individual coefficients suggest that generalized anxiety and depressive symptoms did

not individually predict additional variance in life satisfaction beyond child-rated ADHD

symptom severity.

Mediational analysis

Regarding the potential for perceived life satisfaction to explain increased depressive symptoms

(as measured by the RCADS depressive subtotals) among youth with ADHD, an indirect effect

was observed wherein life satisfaction mediated the effect between ADHD symptom severity and

depressive symptoms (point estimate = –2.27, 95% confidence interval [CI] = .003 to .070).

Discussion

The purpose of this study was to examine the nature of life satisfaction among youth with ADHD

by examining the contributions of child- and parent-rated ADHD symptom severity, child-rated

generalized anxiety symptoms, and child-rated depressive symptoms. We also sought to

determine whether life satisfaction could account for the impact of child-rated ADHD symptoms

upon child-rated depressive symptoms. Of note, although the rate of anxiety disorder

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comorbidity was relatively low (11.7%) in the current sample, 27% of the sample were being

treated with SRI medications. While ADHD symptoms (and the associated academic and social

impairment) often drive treatment-seeking behavior, comorbidity rates found in this study

collectively suggest that mood disturbances were witnessed with relative frequency which may

necessitate pharmacotherapy with SRIs.

As expected, and consistent with previous findings (Gudjonsson et al., 2009; McKnight et al.,

2002), child-rated ADHD symptoms, and generalized anxiety and depressive symptoms were

inversely and moderately associated with life satisfaction. This can be understood by considering

the potential impact that such symptoms might have upon life satisfaction. In terms of ADHD

symptoms, youth who exhibit difficulty maintaining attention and focus will likely find it harder

to follow-through with tasks and goals, perhaps providing fewer opportunities for them to build

self-efficacy and confidence; hence, they might experience lower life satisfaction. Youth who

exhibit hyperactivity and/or impulsivity might be perceived negatively in their interpersonal

relationships due to the exhibition of disruptive behavior, which might also negatively impact

life satisfaction. Thus, the presence of significant ADHD symptoms might make it more difficult

for youth to successfully manage the varied experiences that impact life satisfaction. The finding

that youth who exhibited greater generalized anxiety symptoms also reported less life satisfaction

is consistent with research linking anxiety and life satisfaction in young adults (Mahmoud,

Staten, Hall, & Lennie, 2012). Youth who experience generalized anxiety symptoms may worry

over the potential consequences of trying new situations or interacting with new people, and may

be in general less confident in their abilities to meet their goals – all of which may negatively

impact their life satisfaction. We also found significant links between depressive symptoms and

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life satisfaction, which is also consistent with previous work (Lewinsohn et al., 1991). Youth

who experience depressive symptoms, particularly in the presence of an ADHD diagnosis, are

more likely to experience problems with sleep (Mayes et al., 2009), and are more likely to have

encountered adverse life events (e.g., arguments with parents, parent in prison, parent divorce,

death of relative, financial hardship among family; Daviss & Diler, 2012). Both of these

phenomena interfere with daily functioning across settings, and therefore seem likely to have a

negative impact upon perceived satisfaction with life.

Although not the primary focus of this paper, the weak association between child- and parent-

rated ADHD symptoms warrants comment and is consistent with previous research examining

the phenomenon of positive illusory bias, namely an overestimation of self-competence among

youth with ADHD, particularly as compared to parent- and/or clinician-rated competence

(Owens et al., 2007). Further, it is not uncommon for youth and parent reports to be discrepant,

as each informant may have a different perspective in terms of the youth’s coping and emotion

regulation abilities (Hourigan, Goodman, & Southam-Gerow, 2011). However, it is surprising

that parent-rated ADHD symptoms showed no significant association with clinical variables

aside from child-rated ADHD symptoms. If positive illusory bias was culpable in the differences

between child- and parent-rated ADHD symptoms – that is to say, if a child’s underestimation of

his or her ADHD symptoms accounted for discrepancies between ratings of youth and their

parents – then it would be expected that the relationships between child-rated ADHD symptoms

and other clinical variables (e.g., life satisfaction, depressive symptoms) would be attenuated, as

there is little in the literature to suggest a similar underestimation bias with respect to these

variables among youth with ADHD (Mick et al., 2008; Owens et al., 2007). These patterns of

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association may reflect shared method variance in which reports by the same individual may be

inter-related partially independent of construct assessed.

Although the combination of child-rated depressive and generalized anxiety symptoms predicted

life satisfaction over and above ADHD symptoms independent of rater in the current sample,

depressive symptoms were the only significant independent predictor, and only in the parent-

rated model. This is surprising, given previous findings suggesting that life satisfaction is more

strongly associated with anxiety and depression symptoms than with ADHD symptoms

(Gudjonsson et al., 2009). However, this finding was consistent with the observation that

depressive and generalized anxiety symptoms were more strongly correlated with ADHD

symptoms than was life satisfaction, and that depressive and generalized anxiety symptoms were

of generally equivalent correlative strength. These findings, although difficult to interpret

meaningfully, indicate the need for further research to clearly articulate the nature of these

relationships.

The finding that life satisfaction mediated the relationship between child-rated ADHD symptoms

and depressive symptoms is consistent with prior research in this area (e.g., McKnight, Huebner,

& Suldo, 2002). Youth with ADHD are likely to find academic tasks and social interactions

more challenging than their peers (DuPaul et al., 2004), and their subjective experience of daily

life – particularly within the school-age portions of the developmental arc – may become more

negative as a result (Gudjonsson et al., 2009). The lowered perception of life satisfaction could

contribute to concomitant manifestation of negative emotion as anxious and depressive

symptoms, discouragement, and low confidence among youth with ADHD. Clinically, this

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suggests that youth with ADHD may benefit from activities that foster a sense of self-worth and

enhance life satisfaction. For instance, incorporation of commonly used treatment strategies such

as behavioral activation, problem-solving skills, use of positive reinforcement, and social skills

training may have a positive impact on youth life satisfaction and may therefore foster better

adjustment (Davidson & Memaray, 2007; Demaray & Malecki, 2003; McKnight et al., 2002).

This study has several limitations. First, the design was cross-sectional, thereby preventing

inference of causal effects. Second, the sample was treatment-seeking and relatively

homogeneous demographically, limiting the potential for generalization of findings to the larger

population of youth with ADHD. Third, the majority of data were collected via self-report, so

same-reporter bias may have impacted the results. Similarly, the lack of parent-reported GAD

and depressive symptoms, and of teacher-reported ADHD symptoms, decreases the

interpretability of the study’s results due to increased need for inference. Future research should

stress triangulation of data by incorporating multiple rater perspectives, and examine more

closely the direction of observed relationships among youth with ADHD.

Implications for Practice

The findings of this study have important implications for clinical practice. First, treatment

efforts for ADHD in youth should explicitly address life satisfaction in addition to targeting

ADHD symptoms. Utilizing comprehensive treatment may engender a more positive outcome, in

that heightened life satisfaction predicts decreased risk for depressive and generalized anxiety

symptoms in this population. Significant progress in the area of interventions addressing life

satisfaction has been made, with interventions typically targeting character strengths assessed by

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the Values in Action Inventory of Strengths (VIA-IS; Peterson et al., 2005); however, further

research is necessary to determine the appropriateness and effectiveness of such interventions

among youth with ADHD. Second, as an extension to the first point, youth presenting with

ADHD symptoms should also be assessed utilizing a measure of life satisfaction. Deficits in this

area, particularly within the context of ADHD, should alert the clinician to the risk of depressive

and/or generalized anxiety symptoms, as well as possible additional academic and social

impairment.

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Table 1 Correlations and Descriptive Statistics for Clinical Variables

Variable LS ADHD (Child) ADHD (Parent) RCADS Reliability Mean (SD)

Life Satisfaction - -.327** -.165 -.367** .86 30.39 (7.97)

ADHD (Child) -.327** - .231* .553** .88 20.41 (9.92)

Inattention -.381** .849** .129 .573** .79 11.76 (5.22)

Hyperactivity/Impulsivity -.204* .894** .263** .406** .86 8.66 (6.15)

ADHD (Parent) -.165 .231* - .069 .91 31.68 (10.77)

Inattention -.144 .226* .226* .228 .87 18.57 (5.38)

Hyperactivity/Impulsivity -.138 .175 .894** .068 .92 13.11 (7.24)

RCADS -.367** .553** .069 - .82 15.90 (7.05)

Anxiety -.288** .462** .124 .831** .84 6.42 (3.88)

Depression -.333** .479** .000 .870** .70 9.48 (4.39)

Note: LS=Life Satisfaction, refers to Student Life Satisfaction Scale scores; ADHD scores refer to Inattentive,

Hyperactive/Impulsive, and Combined subscale scores from the Vanderbilt ADHD Rating Scale – Child or Parent version;

RCADS=Revised Child Anxiety and Depressive Scales. *ρ<.05; **ρ<.01

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Table 2 Hierarchical regression models for child-rated life satisfaction.

Variables R2 R2 change F B (std. error) β

Parent-rated model

First step .04 - 4.71*

ADHD symptoms (Parent) -0.11 (0.05) -0.21*

Second step .18 .14 8.81***

RCADS subscales

[MDD] -0.46 (0.18) -0.26*

[GAD] -0.36 (0.20) -0.18

Child-rated model

First step .11 - 13.04***

ADHD symptoms (Child) -0.26 (0.07) -0.33***

Second step .16 .05 3.22*

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RCADS subscales

[MDD] -0.35 (0.19) -1.84

[GAD] -0.24 (0.21) -0.12

Note: ADHD symptoms) = Combined subscale scores from the Vanderbilt ADHD Rating Scale – Parent or Child

version; RCADS = Revised Child Anxiety and Depressive Scales; MDD = Major Depressive Disorder subscale;

GAD = Generalized Anxiety Disorder subscale. *ρ<.05; **ρ<.01; ***ρ<.001

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